Grain-drier.



Ill 4%? I HHPnEHnhiH Hug 4 F Hung-H HEHHHQ PATENTED DEC. 29, 1903.

J G. KIN G.

- THE NORRIS PETERS CO. PNOTOVUTMDM WASH NOYON. D L.

GRAIN DRIER.

APPLICATION FILED JAN. 28, 1903.

TVZYfTQQjJQS. $1771? nu N N0 MODEL.

Patented fiecniber 29, 1903.

PATENT OFFICE.

JOSEPH GOODWIN KING, OF PORT ARTHUR, CANADA.

GRAIN-DRIER.

SPECIFICATION forming part of Letters Patent No. 748,079, dated December29, 1903.

Application filed January 28 1908. Serial No. 140,928. (No model.)

sentially, of a casing, a plurality of heat-radiators, and doublescreens, preferably alternately and vertically arranged above suitablehoppers, the top of the casing being provided with feeding-spouts forthe grain and an exhaust-spout for drawing off the air and the bottombeing provided with a suitable slide to shut oft the bottom of thehoppers and a suitable gate to close oif the funnel shaped bottom, theparts being arranged and constructed in detail as hereinafter more par-.

ticularly explained.

Figure 1 is a sectional perspective view showing my improved drier. Fig.2 is a sectional plan. Fig. 3 is a detail of the steamconducting screenor duct.

In the drawings like characters of reference indicate correspondingpartsin-each figure.

A is the casing, which is preferably made circular, and A is thecone-frustum-shaped top and A the cone-frustum-shaped bottom. The top Ais provided with an exhaust-tube a, which is suitably connected tothecenter of the top, and the top may be made so that it may be readilyremoved, but is so connected to the top of the casingthat it will behermetically sealed.

B represents a series of feed-tubes which extend into the top A andarepreferably provided with worm conveyers b. The top of thefeeding-tube is provided with arfunnel B, into which it is designedtofeed the grain, and the funnel is interiorly provided with a suitablecover 1), whereby the feed-tube and funnel may be hermetically sealed.There may be as many feed-tubes and funnels as may be found convenientand their location inthe top may be made as found most desirable.

The cone-frustum-shaped bottom is provided at the center with a suitablegate A, whereby the orifice ct may be hermetically sealed. 4 i

O represents a series of crosswise-extending hoppers which are taperedfrom the top to the bottom, being narrower at the bottom. The walls ofthe-hoppers I designate c.

i D is a slide provided with a series of openings d, which are designedso that they may be brought to register with the bottom of the hoppers(l, as indicated in the drawings.

1 d is a spindle which extends through the casing and is provided with ahand-wheel d The inner end of the spindle is threaded and extendsthrough lugs (1 correspondingly threaded.

01 is a .pin which extends into an annular groove (1 in the spindle d.

It will now be seen by turning the handwheel d the slide D, which issupported in suitable ways, may be adjusted so as to open or close thebottom. of the hopper C.

E represents a plurality of heat-radiators located between the hoppers Cand vertically arranged. The radiators are connected togetherbycommunicating pipes and are provided at one end with a steam-inlet pipee and at the opposite end with a steam-outlet pipe e, which preferablyextend through the bottom of the casing.

F represents a plurality of screens comprising the bounding edges f andthe fine-wire sides f f. The bottom edge has openings f in the same andthe top edge openings f The side edges of the screens are supported insuitable guideways 2. The screens F are located above the center of thehopper, leaving suflicient space between the bottom edges of the screensand the hopper so as to permit of the ready passage of the grain orother material.

G is a spindle which extends centrally through the hoppers underneaththe screens and is provided with an. eccentrically arranged wheel gunderneath each screen. The spindle G is caused to rotate in anysuitable manner so as to impart a vertical vibratory movement to thescreens. I may dispense with this vibratory movement; but in someclasses of material it is very essential that I should use it in orderto insure of the descent of the material into the hoppers.

H is a receiving-hopperlocated beneath the gate A This hopper may be inthe form of a trough or conduit or any other suitable form and isdesigned to carry off the dried grain or material.

Having now described the principal parts involved in my invention, Ishall briefly de-' scribe its operation and utility. The slide D ismanipulated by the hand-wheel so as to close the hoppers and the gate Ais hermetically sealed. The damp grain is then fed in through thefeed-tubes B, so that it fills the spaces between the screens andradiators. The feed-tubes are hermetically sealed by the covers or caps19'. The heat passing through the radiators now serves to dry the grainand necessarily in so drying the steam arises from such grain, suchsteam passing through the mesh of the screens and ascending through thetop openings f of the screens. An exhaust air or vacuum pump of anysuitable form is applied to the end of the tube a, so as to render theinterior of the casing in vacuo and at the same time serves to draw 0dthe steam through the heated screens. It will thus be seen that suchgrain may be dried very rapidly on account of the spaces produced, bythe screens allowing of the radiation of the heat, and the passing offof the steam through the various layers of grain between the screens andthe radiators.

Although I show a parallelly-arranged form of radiators and screensalternately arranged,

' it will be readily understood that the form of the air-spaces formedby the screens may be readily varied as well as the forms of theradiators, the essential object being to produce a plurality ofheat-radiators and ducts to carry away the steam intersticed throughoutthe body of the grain, and I wish it to be understood that I donot wishto limit myself to the form in which I have shown the heaters in theradiator nor the form in which the ducts are shown, as these may bechanged without departing from the spirit of this invention.

What I claim as my invention is 1. In a grain-drier, the combinationwith the casing and a plurality of hoppers at the lower end thereof, ofheaters located between the hoppers, and steam-ducts located above thehoppers as and for the purpose specified.

2. In a grain-drier, the combination with the casing and a plurality ofhoppers at the lower end thereof parallelly arranged,of heaters locatedbetween and extending vertically above the hoppers, and steam-ductslocated above the hoppers as and for the purpose specified.

3. In a grain-drier, the combination with the casing and a plurality ofhoppers at the lower end thereof parallelly arranged,of heaters locatedbetween and extending above the hoppers, and double screens havingopenings in the bottom edge, and openings in the top edge and locatedabove the hoppers as and for the purpose specified.

4. In a grain-drier, the combination with the casing and a plurality ofhoppers at the lower end thereof parallelly arranged, of heaters locatedbetween and extending above the hoppers, and double screens havingopenings in the bottom edge, and openings in the top edge and locatedabove the hoppers, and suitable guideways for the side edges of thescreens as and for the purpose specified.

5. In a drier, the combination with the easing and a plurality ofhoppers at the lower end thereof parallelly arranged, of heaters locatedbetween and extending above the hoppers, and double screens havingopenings in the bottom edge, and openings in the top edge and locatedabove the hoppers and suitable guideways for the side edges of thescreens, and means for imparting a vertical vibratory movementto thescreens as and for the purpose specified.

6. In a drier, the combination with the casing and a plurality ofhoppers at the lower end thereof parallelly arranged, of heaters locatedbetween and extending above the hoppers, and double screens havingopenings in the bottom edge and openings in the top edge and locatedabove the hoppers, and suitable guideways for the side edges of thescreens, a rod extending crosswise through the casing andeccentrically-arranged wheels secured to the rod and designed to imparta vertical vibratory movement to the screens as and for the purposespecified.

7. In a drier, the combination with the easing and a plurality ofhoppers at the lower end thereof parallelly arranged, and a slideprovided with openings to register with the discharge-openings at thebottom of the hopper, and means for adjusting such slide, of heaterslocated between and extending vertically above the hoppers, andsteam-ducts located above the hoppers as and for the purpose specified.

' 8. In a drier, the combination with the casing having acone-frustum-shaped top and cone -frustum -shaped bottom, an exhaust-.tube extending out from the center of the top and a feed-tube leadingthrough the top, and a gate for normally closing the bottom, of suitablehoppers located in the casing, suitable heaters extending verticallyabove from between the hoppers and suitable steamducts extendingvertically above the hoppers as and for the purpose specified.

JOSEPH GOODWIN KING.

Witnesses:

-B. BOYD, M. MCLAREN.

